Gorman, M. (2010). Stairway to the stars: Sufism, Gurdjieff, and the inner tradition of mankind. Aeon.
Citazione stile Chigago Style (17a edizione)Gorman, Max. Stairway to the Stars: Sufism, Gurdjieff, and the Inner Tradition of Mankind. London: Aeon, 2010.
Citatione MLA (9a ed.)Gorman, Max. Stairway to the Stars: Sufism, Gurdjieff, and the Inner Tradition of Mankind. Aeon, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.